High gamma power is phase-locked to theta oscillations in human neocortex.

by: RT Canolty, E Edwards, SS Dalal, M Soltani, SS Nagarajan, HE Kirsch, MS Berger, NM Barbaro, RT Knight

Science, Vol. 313, No. 5793. (15 September 2006), pp. 1626-1628.

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Abstract

We observed robust coupling between the high- and low-frequency bands of ongoing electrical activity in the human brain. In particular, the phase of the low-frequency theta (4 to 8 hertz) rhythm modulates power in the high gamma (80 to 150 hertz) band of the electrocorticogram, with stronger modulation occurring at higher theta amplitudes. Furthermore, different behavioral tasks evoke distinct patterns of theta/high gamma coupling across the cortex. The results indicate that transient coupling between low- and high-frequency brain rhythms coordinates activity in distributed cortical areas, providing a mechanism for effective communication during cognitive processing in humans.

@article{citeulike:1151910, abstract = {We observed robust coupling between the high- and low-frequency bands of ongoing electrical activity in the human brain. In particular, the phase of the low-frequency theta (4 to 8 hertz) rhythm modulates power in the high gamma (80 to 150 hertz) band of the electrocorticogram, with stronger modulation occurring at higher theta amplitudes. Furthermore, different behavioral tasks evoke distinct patterns of theta/high gamma coupling across the cortex. The results indicate that transient coupling between low- and high-frequency brain rhythms coordinates activity in distributed cortical areas, providing a mechanism for effective communication during cognitive processing in humans.}, address = {Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA. rcanolty@berkeley.edu}, author = {Canolty, R. T. and Edwards, E. and Dalal, S. S. and Soltani, M. and Nagarajan, S. S. and Kirsch, H. E. and Berger, M. S. and Barbaro, N. M. and Knight, R. T. }, citeulike-article-id = {1151910}, doi = {http://dx.doi.org/10.1126/science.1128115}, issn = {1095-9203}, journal = {Science}, keywords = {cortex, gamma, hfo, oscillation}, month = {September}, number = {5793}, pages = {1626--1628}, posted-at = {2008-07-08 19:09:45}, priority = {2}, title = {High gamma power is phase-locked to theta oscillations in human neocortex.}, url = {http://dx.doi.org/10.1126/science.1128115}, volume = {313}, year = {2006} }

RIS record

TY - JOUR ID - citeulike:1151910 L3 - citeulike-article-id:1151910 TI - High gamma power is phase-locked to theta oscillations in human neocortex. JF - Science VL - 313 IS - 5793 SP - 1626 EP - 1628 AD - Helen Wills Neuroscience Institute, University of California, Berkeley, CA 94720, USA. rcanolty@berkeley.edu SN - 1095-9203 N2 - We observed robust coupling between the high- and low-frequency bands of ongoing electrical activity in the human brain. In particular, the phase of the low-frequency theta (4 to 8 hertz) rhythm modulates power in the high gamma (80 to 150 hertz) band of the electrocorticogram, with stronger modulation occurring at higher theta amplitudes. Furthermore, different behavioral tasks evoke distinct patterns of theta/high gamma coupling across the cortex. The results indicate that transient coupling between low- and high-frequency brain rhythms coordinates activity in distributed cortical areas, providing a mechanism for effective communication during cognitive processing in humans. KW - cortex KW - gamma KW - hfo KW - oscillation AU - Canolty, RT AU - Edwards, E AU - Dalal, SS AU - Soltani, M AU - Nagarajan, SS AU - Kirsch, HE AU - Berger, MS AU - Barbaro, NM AU - Knight, RT PY - 2006/09/15/ UR - http://dx.doi.org/10.1126/science.1128115 ER -

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